A novel composite Si-Mo-Ti coating with Ti concentration gradient for Nb-Si based ultrahigh temperature alloy prepared by slurry sintering
Source abstract
Abstract
Composite Si-Mo-Ti coatings with Ti concentration gradient have been successfully prepared on Nb-Si based ultrahigh temperature alloy by slurry sintering. The gradient structure has a higher content of Ti and a lower content of Mo in the outermost layer, which can inhibit the formation of volatile MoO 3 and cracks in the coating and guarantee the rapid formation of a dense Si-O-Ti layer during oxidation. After oxidation at 1380 ℃ for 100 h in air, a continuous and compact (Ti,X)O 2 layer and a dense duplex Si-O-Ti/(Ti,X)O 2 layer formed, which dramatically reduces inward diffusion of O 2- and effectively improves the oxidation resistance.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · High-Temperature Coating Behaviors · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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